13662945389 has 2 divisors, whose sum is σ = 13662945390. Its totient is φ = 13662945388.

The previous prime is 13662945343. The next prime is 13662945437. The reversal of 13662945389 is 98354926631.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11694692164 + 1968253225 = 108142^2 + 44365^2 .

It is a cyclic number.

It is not a de Polignac number, because 13662945389 - 2⁸ = 13662945133 is a prime.

It is a super-2 number, since 2×13662945389² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13662915389) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6831472694 + 6831472695.

It is an arithmetic number, because the mean of its divisors is an integer number (6831472695).

Almost surely, 2^13662945389 is an apocalyptic number.

It is an amenable number.

13662945389 is a deficient number, since it is larger than the sum of its proper divisors (1).

13662945389 is an equidigital number, since it uses as much as digits as its factorization.

13662945389 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8398080, while the sum is 56.

The spelling of 13662945389 in words is "thirteen billion, six hundred sixty-two million, nine hundred forty-five thousand, three hundred eighty-nine".